20112220210101 has 4 divisors (see below), whose sum is σ = 26816293613472. Its totient is φ = 13408146806732.

The previous prime is 20112220210091. The next prime is 20112220210151. The reversal of 20112220210101 is 10101202221102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20112220210101 - 2⁹ = 20112220209589 is a prime.

It is a super-2 number, since 2×20112220210101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112220210151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3352036701681 + ... + 3352036701686.

It is an arithmetic number, because the mean of its divisors is an integer number (6704073403368).

Almost surely, 2^{20112220210101} is an apocalyptic number.

It is an amenable number.

20112220210101 is a deficient number, since it is larger than the sum of its proper divisors (6704073403371).

20112220210101 is an equidigital number, since it uses as much as digits as its factorization.

20112220210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704073403370.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20112220210101 its reverse (10101202221102), we get a palindrome (30213422431203).

The spelling of 20112220210101 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, two hundred ten thousand, one hundred one".